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전체 선택해제
총 34건 검색
본문검색 결과만 보기
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A simplified one-step nuclear transfer procedure alters the gene expression patterns and developmental potential of cloned porcine embryos
Sang Kyu Park, Sangho Roh*, Jong-Im Park* 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2014, 제 15권 제 1호 8 73-80 (8 pages)
Various somatic cell nuclear transfer (SCNT) techniques for mammalian species have been developed to adjust species-specific procedures to oocyte-associated differences among species. Species-specific SCNT protocols may result in different expression levels of developmentally important genes that may affect embryonic development and pregnancy. In the present study, porcine oocytes were treated with demecolcine that facilitated enucleation with protruding genetic material. Enucleation and donor... -
Effects of Single Treatment of Anti-Dementia Drugs on Sleep-Wake Patterns in Rats
Ji-YoungJung, MootaekRoh, Kyung-KyunKo, Hwan-SooJang, , Seong-RyongLee, Jeoung-HeeHa, Il-SungJang, , Ho-WonLee, Maan-GeeLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2012, Vol.16 No.4 2 231-236 (6 pages)
We studied the effects of acetylcholinesterase inhibitors, donepezil and galantamine, and an N-methyl-D-aspartate (NMDA) receptor blocker, memantine, on sleep-wake architecture in rats. Screw electrodes were chronically implanted into the frontal and parietal cortex for the electroencephalography (EEG). EEG was recorded with a bio-potential amplifier for 8 h from 09:30 to 17:30. Vibration was recorded to monitor animal activity with a vibration measuring device. Sleep-wake states such as wake... -
Voltage-dependent Ca2＋ Current Identified in Freshly Isolated Interstitial Cells of Cajal (ICC) of Guinea-pig Stomach
YoungChulKim, HikaruSuzuki, Wen-XieXu, HikaruHashitani, WoongChoi, Hyo-YungYun, Seon-MeePark6, SeiJinYoun6, Sang-JeonLee, SangJinLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.6 6 323-330 (8 pages)
The properties of voltage dependent Ca2＋ current (VDCC) were investigated in interstitial cells of Cajal (ICC) distributed in the myenteric layer (ICC-MY) of guinea-pig antrum. In tissue, ICC-MY showed c-Kit positive reactions and produced driving potentials with the amplitude and frequency of about 62 mV and 2 times min−1, respectively, in the presence of 1</SUP>ՌM nifedipine. Single ICC-MY isolated by enzyme treatment also showed c-Kit immunohistochemical reactivity. These... -
Effects of Central Interleukin-1 on the Cardiovascular Response in Hemorrhaged Rats
JoonHoKang, JaeHeeJang, DongKukAhn, JaeSikPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.2 4 89-94 (6 pages)
The arterial pressure is regulated by the nervous and humoral mechanisms. The neuronal regulation is mostly carried out by the autonomic nervous system through the rostral ventrolateral medulla (RVLM), a key area for the cardiovascular regulation, and the humoral regulation is mediated by a number of substances, including the angiotensin (Ang) II and vasopressin. Recent studies suggest that central interleukin-1 (IL-1) activates the sympathetic nervous system and produces hypertension. The... -
Dexamethasone에 의한 생쥐 흉선의 Apoptosis에서 Polyamine의 역할
최상현(Sang-Hyun Choi), 김용훈(Yong-Hoon Kim), 홍기현(Gi-Hyun Hong), 신경호(Kyung-Ho Shin), 천연숙(Yeon-Sook Chun), 전보권(Boe-Gwun Chun) 대한약리학회 대한약리학잡지 14 Pages
대한약리학회 대한약리학잡지 1996, 제 32권 제 1호 13 113-126 (14 pages)
세포내 polyamine은 DNA 구조 뿐 아니라 전사과정, 세포의 성장, 분화, 및 증식 등에 간여하는 바, 배양 흉선세포의 apoptosis 을 억제한다고 한다. 따라서 dexamethasone에 의한 생쥐 흉선세포의 apoptosis 반응에 대한 polyamine의 억제작용을, polyamine 생성과 대사억제제들로 처치한 흉선세포의 일차배양실험에서 관찰하여, 그 결과를 A23187과 DHEA의 작용과 비교하였다. 1) 흉선세포 생존율이 dexamethasone, DHEA, A23187, DFMO, MGBG들에 의하여 직접 현저히 억제되며, aminoguanidine, putrescine, spermidine, 및 spermine들에... -
α-독으로 처리한 토끼창간막동맥에서 Norepinephrine과 GTP에 의한 마이오신 인산화의 증가에 대한 Ca2+/calmodulin-dependent Protein Kinase II의 역할
안희열(Hee Yul Ahn), 김헌식(Hun Sik Kim), Robert S. Moreland 대한약리학회 대한약리학잡지 6 Pages
대한약리학회 대한약리학잡지 1994, 제 30권 제 1호 12 111-116 (6 pages)
수용체작동약물과 GTP에 의한 수축단백질의 칼슘이온의 감수성의 증가에 대하여 Ca2+/calmodulin-dependent protein kinase II의 역할을 α-독으로 처리한 토끼장간막동맥에서 조사하였다. 0.3μM의 칼슘이온은 마이오신의 인산화를 시간의존적으로 증가시켰고 5분 이후부터 평형에 도달하였다. 한편, 10μM의 norepinephine과 10μM의 GTP는 칼슘이온 존재하에 칼슘이온 단독에 의한 것 보다 더 마이오신의 인산화를 증가시켰는데, 5분 후에 최대에 달하였고 그 후는 감소하기 시작하여 20분 후에는 칼슘이온 단독에 의한 마이오신... -
내면화된 수치심이 편집성향에 미치는 영향: 외로움에서 성별의 조절된 매개효과
이수운, 오현숙 한국발달지원학회 발달지원연구 17 Pages
한국발달지원학회 발달지원연구 2020, 제 9권 제 1호 4 49-65 (17 pages)
본 연구는 사회탈구심성이론에서 출발하여 내면화된 수치심과 편집성향의 관계를 외로움이 매개하는지, 그리고 그 과정에서 성별이 조절효과를 갖는지 확인하고자 하였다. 이를 위해 대학생 444명을 대상으로 내면화된 수치심, UCLA 외로움, 편집증 척도를 사용하여 설문조사를 실시하였다. 본 연구의 결과는 다음과 같다. 첫째, 내면화된 수치심과 외로움, 편집성향은 유의한 상관이 있었다. 둘째, 내면화된 수치심이 편집성향에 영향을 미치고, 이 관계를 외로움이 부분매개하는 것으로 나타났다. 셋째, 성별에 의해 조절된 외로움의... -
The Appreciation and Experience of Digital Images- Critical Review of Use of Digital Images in Museum Environment -
Bokyung Koo 한국조형교육학회 조형교육 29 Pages
한국조형교육학회 조형교육 2009, 제 34집 2 1-29 (29 pages)
of works of art, to conducting research, and to delivering results to the public. As technologies has introduced new challenges for museums, museum professionals have embraced new interactive technologies for their promise to offer aesthetic, cultural, and contextual information on exhibits, and to boost museum attendance. Museum visitors, expecially children and young adults, have responded enthusiastically to interactive exhibits, even coming to expect them as integral part of the museum... -
미술관 관람객과 도슨트 간의 담화분석을 통한 상호작용적 학습경험 연구
배진희, 손지현 한국조형교육학회 조형교육 31 Pages
한국조형교육학회 조형교육 2013, 제 48집 8 189-219 (31 pages)
미술관은 더 이상 특정한 계층이나 소장가들을 위한 공간이 아니라 일반 대중들의 문화적·지적 욕구를 충족하기 위한 교육기관으로 탈바꿈하고 있다. 특히 미술관은 미 술가의 창조적인 사고와 새로운 시각과의 만남을 통해 사람들의 끊임없는 재교육의 기회를 제공하는 공간이 되고 있다. 따라서 미술관이 관람객들에게 어떤 미적 체험의 교육을 제공하도록 할 것인가에 대한 논의가 필요하다. 많은 미술관에서 운영 중인 도슨트 프로그램은 도슨트의 일방적 설명으로 이루어지고 있어 관람객과의 상호작용 을 통해 작품 감상이해를... -
Core Talent Development Case Study - POSCO (ppt)
박영용 한국성인교육학회 한국성인교육학회 학술대회지 10 Pages
한국성인교육학회 한국성인교육학회 학술대회지 2005년호 12 145-154 (10 pages)
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The Emerging Professional Teacher Identity of Early Childhood and Foundation Phase Pre-service Teachers: Implications for Teacher Education Programmes
Rita Chikoko, Thabo Msibi 환태평양유아교육연구학회 Asia-Pacific journal of research in early childhood education 24 Pages
환태평양유아교육연구학회 Asia-Pacific journal of research in early childhood education 2020, Vol.14 No.2 3 53-76 (24 pages)
Professional teacher identity is an important element in teaching. A teacher who rightfully identifies with teaching can be capable of helping learners achieve. Professional teacher identity needs to be addressed starting from pre-service level for preparation of effective teachers. This paper explores how Early Childhood Development and Foundation Phase (ECD and FP) pre-service teachers in South Africa construct professional teacher identity. A qualitative study in which six pre-service... -
Improvement of gas sensing properties of carbon nanofibers based on polyacrylonitrile and pitch by steam activation
Jeongsik Kim, Hyung-Il Kim, Jumi Yun 한국탄소학회 Carbon Letters 5 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 5 36-40 (5 pages)
Polyacrylonitrile/pitch nanofibers were prepared by electrospinning as a precursor for a gas sensor material. Pitch nanofibers were properly fabricated by incorporating polyacrylonitrile as an electrospinning supplement component. Polyacrylonitrile/pitch nanofibers were activated with steam at various temperatures followed by subsequent carbonization to make carbon nanofibers with a highly conductive graphitic structure. Steam activation was effective in facilitating gas adsorption onto the... -
The effect of the spinning conditions on the structure of mesophase pitch-based carbon fibers by Taguchi method
Zhao Jiang, Ting Ouyang, Xiangdong Yao, Youqing Fei 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2016, Vol.19 11 89-98 (10 pages)
Taguchi’s experimental design was employed in the melt spinning of molten mesophase pitch to produce carbon fibers. The textures of the obtained carbon fibers were radial with varied crack angles, as observed by scanning electron microscopy and polarized optical imaging. The diameter, crack angle, preferred orientation, and tensile modulus of the produced samples were examined to investigate the influence of four spinning variables. The relative importance of the variables has been emphasized... -
Characterization and influence of shear flow on the surface resistivity and mixing condition on the dispersion quality of multi-walled carbon nanotube/polycarbonate nanocomposites
Young Sil Lee, Kwan Han Yoon 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.2 3 86-92 (7 pages)
Multi-walled carbon nanotube (MWCNT)/polycarbonate (PC) nanocomposite was prepared by direct melt mixing to investigate the effect of the shear rate on the surface resistivity of the nanocomposites. In this study, an experiment was carried out to observe the shear induced orientation of the MWCNT in the polymer matrix using a very simple melt flow indexer with various loads. The compression-molded, should be eliminated. MWCNT/PC nanocomposite sample exhibited lower percolation thresholds (at 0.8...
